I was thinking of picking one up and putting it on a timer so it runs 15 min 2x per day. I am using the Tom Aquarium Surface Skimmer on my Eheim 2217, but the sponge prefilter changes the flow after...

I had an amazon sword plant that was thriving for over two years, practically growing out of the tank. aAbout 6 months ago it sent out a runner with plantlets, and at the same time became less lush,...